Device for holding coils of strapping with means for delivering lengths therefrom



June 9, 1953 A, FRIE L 2,641,470

- DEVICE FOR HOLDING COILS 0F STRAPPING WITH MEANS FOR DELIVERING LENGTHS THEREFROM Filed Aug. 12, 1949 i J .I W Wl: 25:- o

causes one of the bell cranks 44 to be tilted clock I wise so that its pressure roller releases the coil end. Similarly, rotation of the shaft in the other direction as by lowering lever 49, causes the other pressure roller to release the end of the other coil. Thus, when the lever 49 is in neutral or horizontal position, strapping will be fed out from both coils on rotation of roller 36. When the lever is raised, strapping will be fed from only one coil and when it is lowered, only from the other coil.

The operation of the truck and its appurtenances will doubtless be clear from the foregoing butwill be briefly recapitulated. With the truck standing vertically on its wheels and feet 24 as shown in Figures 1 and 3, the spacer rods 30 are adjusted, if need be, to accommodate the strapping coils to be used. When the rods have been set to the proper spacing from the clearance rods IS, the coils are loaded sidewise into the box I8 and placed on rollers 33, with their free ends at the bottom and extending to the right as seen in Figure l. The coils are then turned clockwise by hand until their ends pass roller 33' and rest on bar 35. The coils arethen turned counterclockwise to feed their ends toward driving roller 36.- The pressure rollers 43 and 43 are raised successively by tilting cam-shaft lever 49 first upwardly and then downwardly, to permit'the ends of the two coils to be threaded between their pressure roller and the driving roller. 1

With the coils thus placed and threaded, clock- 'wise rotation of shaft 31 will cause roller 36 to feed out strapping from both coils if lever 49 is in neutral or horizontal position. If the lever is tilted up, strapping will be fed out only from thefront coil since pressure roller 43' will be raised 'thereby. Conversely, strapping from the rear w coil only will be fed out when lever 49 is tilted down. As strapping is fed out from either coil,

it strikes guide 41, then supporting plate 42 and is held down by guide 4|. If an excess length ofstrapping has been delivered, itmay be drawn back to the extent necessary before shearing, by

reverse rotation of shaft 3'1. When it is desired to move the truck to another location, it is only necessary to tilt it to a suitable angle for travel and push or pull it along on its wheels.

The invention has numerous advantages. The cage is light in weight, easily portable and simple and economical in construction. All the working parts may be actuated while the operator stands erect, no stooping or bending being required exrotation thereof to deliver lengths of strapping as desired. Loading and threading of the strapping coils may be accomplished quickly and easily.

'The coil selector lever 49 may be operated by the operators foot to either extreme position.-

It is self-centering in neutral position by reason of the pressure exerted on the bell cranks 44 by plungers 45.

I claim:

1. Apparatus for feeding elongated material from coils thereof comprising a driving roller adapted to be peripherally engaged by the free ends of the material unwound from the coils, a lever for each coil pivoted adjacent said roller, a pressure roller journaled on each lever cooperating with said driving roller and adapted to press the free end of one coil of material against it, a spring engaging each lever and constantly tending to tilt it and move the pressure roller toward the driving roller, and a shaft having lever-tilting portions spaced therealong and also spaced angularly from each other about the axis of the shaft and thereby being engageable selectively with said levers and adapted to tilt them against the force of said springs.

- posite directions from an intermediate radius of 2. The apparatus defined by claim 1 characterized by said levers including a pair of hell cranks side-by-side, and said shaft having a cam thereon for each bell crank adapted to tilt the cranks respectively, to move their pressure rollers away from the driving roller.

3. The apparatus defined by claim 2 characterized by said cams being spaced angularly in opthe shaft so as to be effective, respectively, on rotation of the shaft in opposite directions from a neutral position.

4. In an apparatus for feeding elongated material from a plurality of coils thereof disposed side-by-side, a driving roller over which the free ends of the coils are adapted to travel, means for rotating said roller to feed the end of any coil which may be frictionally pressed against the roller, a plurality of pressure rollers arranged 'end-to-end in coacting relation to the driving roller, means mounting said pressure rollers for 40 independent movement toward and from the driving roller, spring means engaging said mounting means and urging the pressure rollers toward the driving rollers, and a manually operable shaft having angularly displaced cams spaced therealong adapted to cooperate, respectively, with the mounting means of each of the pressure rollers and selectively retract the latter from the driving roller, said shaft being movable into one of a plurality of positions to retract a selected one of the pressure rollers.

ANTON J. FRIEDL.

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